Tip: Is there any "qingfei food "?

Is there "qingfei food "?

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Rumors: there are a variety of "Clear lung food" in the society. For example, a microblog wrote that "continuous Haze Weather damages the lungs. In addition to reducing travel and wearing masks, proper diet can also achieve the effect of Clearing Lung. White radish treatment of phlegm cough; Sydney Lily stew, white fungus lotus seeds runfei anti-virus; Luo Han fruit tea qingfei fire; fungus, grape, purple cabbage Nourishing Yin runfei. We recommend that you use duck blood and pig blood to clear your lungs! I heard that the miners will have a fresh duck blood each day ."

Truth: the concept of "qingfei" comes from traditional medicine. Every time traditional medicine is involved, fans will point out that "the lung in traditional medicine is not an anatomical lung ". Therefore, before analyzing rumors about Clearing Lung, it is necessary to define the topic: the rumor is about the damage to the body caused by air pollution. Most people talk about this topic, it refers to the "damage to modern medicine" caused by dust in the air on the "Anatomy of the Lung ". As for how our ancestors defined "lung", what their "qingfei" meant, and whether it was valid, they did not discuss the scope here.

How does air dust affect health?

Dust is the main factor in air pollution. In addition to the concentration, particle size is a key factor in dust pollution. The smaller the particles, the greater the hazard. Particles larger than 10 microns in aerodynamic size can be intercepted by CIDR in the nasal cavity, while smaller particles can be inhaled. Typically, PM10 refers to the particle concentration smaller than 10 microns in the air.

10 microns is a small scale. Human hair diameter: about 50 ~ 70 microns. That is to say, if a hair is divided into 25 to 50, the average diameter of each root is smaller than 10 microns. Such particles can enter the lung through breathing, so they are called inhaled particles ".

If the particles are smaller than 2.5 microns, they can further reach the fine bronchial tube of the lung, where they are deposited. These deposits affect gas exchange in the lung, leading to various respiratory symptoms, and even lung cancer.

The size of 2.5 micron particles is very small, and a hair should be divided into 400 to 800 to be smaller than this scale. Because of its great harm, air quality monitoring will specifically measure the particle content smaller than it, which is known as PM2.5.

Particles of this scale will stay in the lungs. Those smaller than 0.1 microns can pass through the alveolar lung to enter the blood, and as the blood flow to other organs, including the brain. They are deposited in the vascular, which can cause vascular hardening and thus harm the cardiovascular health.

Does food affect the dust inhaled?

The main impact of these dust on the human body is physical. To "clear" them, you have to ask the "cleaners" to meet them. Food enters the body from the gastrointestinal tract, and through the gastrointestinal tract, the large molecules are digested and decomposed into small molecules. Like other small molecules in the food, they pass through the small intestine to enter the blood and are then transported to cells everywhere in the human body.

Comparing the movements of air particles and food in the body, we will find that there is no chance to see each other between food and those particles larger than 0.1 microns, and naturally they cannot be "cleared ". And those extremely "small" particles entering the blood are still huge before small molecules in food. Although the possibility of "A mouse beats an elephant" cannot be ruled out logically, there is no experimental evidence. It is just a good imagination to remove dust by using small molecules of these foods.

How is the food efficacy of "qingfei "?

 

In addition to shoot your head and then spread it with others, the "basis" of some foods "qingfei" is that after eating, the stool turns black. Similarly, there are a variety of "detoxifying" foods or health products, which are considered "effective" because of their black stools.

The color of stool is indeed related to food, and we can also make some speculation through the color and texture of stool. One of the most common causes of black stools is gastrointestinal hemorrhage, especially gastrointestinal ulcer or cancer. In general, this black will be sticky and smelly.

In addition, some foods, dietary supplements, or medicines can also lead to black stools. The most common condition is iron. For example, taking iron supplements usually results in black stools.

Taking Animal blood products "qingfei" is similar to the "remedies" that all China knows ". No clinical evidence of this prescription was found. It may be that some people eat pig blood or chicken blood and duck blood, which leads to black stools and is regarded as "Clearing Lung", so it is spread. Animal blood contains a lot of iron. If this happens, it would be normal. However, it has nothing to do with "qingfei.

Some people explain that eating animal blood products or other foods "Clear lung" is: food contains XX ingredients and has XX effect on the human body, therefore, this food can ensure that "toxic and harmful substances are discharged" and "immunity is increased" to resist the "hazards" of air pollution ". This big and empty reason has no value. Each type of nutrients required by the human body has such a role. For example, people who do not drink water or do not eat will become ill or even die, and naturally cannot resist the "dust hazard ". According to this reasoning, we can draw the conclusion that both water and rice can clear the lungs.

In addition to animal blood products, there are many foods in traditional medicine, such as pears, sugar, Tremella, and radishes. In modern medicine, there is no concept of "qingfei. These so-called "qingfei food" are also "traditional medicine lung ". Even in traditional medicine, this "lung" lacks a unified and clear definition. The "lung" in modern medicine only borrowed the name. In traditional medicine, "qingfei" generally refers to slowing down the symptoms related to respiratory tract, such as cough and phlegm. Some medicines and foods are helpful for slowing down these symptoms, so they are also called "qingfei food" or "qingfei medicine ".

When the ancients proposed the concept of "qingfei" and opened "qingfei recipe" or "qingfei prescription", they probably did not realize the problem of air pollution. It is not discussed here whether these foods can slow down those respiratory symptoms, but the concept of "clear lung" is completely different from the "clear lung" that solves air pollution.

Conclusion: "Food Clearing Lung" is just a good wish. No food can clear or mitigate the impact of dust pollutants in the air on the lung. "Qingfei food" and "qingfei health care products" are just gimmicks.